Networks I keyterms

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Types of networks:

  1. LAN: (Local Area Network) a small network that has a small range e.g. a house or small business
  2. WLAN: (Wireless Local Area Network) The above + wireless
  3. MAN: (Metropolitan Area Network) a network with a higher range bigger enough to cover a part of a city
  4. WAN: (Wide Area Network)

Network related terms:

  1. Client: A programs which sends requests to a server.
  2. Server: A program which provides services to the client.
  3. Client / Server: When a computer program,the server, sends a request to another one, the server, in order to be able to have a service.
  4. Ethernet: It is formed of 8 copper cables an enables you to connect to the Internet through your PC's port and your ISP
  5. Network: A group of interconnected computers.
  6. P2P: (Peer-to-Peer) When information is shared not using a single-sompute server but all of the computers can work as a server
  7. NIC: (Network Interface Card) It's a card that you connect on your computer to be able to connect to a network.
  8. ATM: (Automatic Teller Machine) "cajero automático"
  9. EDI : (Electronic Data Interchange) Is a way to exchange data from businesses
  10. EFT: (Electronic Funds Transfer) It helps to make an online money deposit or bank transaction
  11. ISP: (Internet Sevice Provider)
  12. Modem: It is a device that regulates the signals from
  13. AP: (Access point)a station or device in a wireless LAN, that plugs into an Ethernet switch or hub.
  14. UPS: (Uninterruptible Power Supply) provides a battery backup when the electrical power fails to an unacceptable voltage level.​
  15. WiFi: Enables most IT devices to connect wirelessly to the internet.It requires a hotspot or access point
  16. BlueTooth: wireless technology that enables the transfer of data over short distances. It creates PAN´s (Personal Area Networks)
  17. IP Address: (Internet Protocol address) Its a set of numbers assigned to each device that can connect to a network that uses internet protocol for communication. Used for: local addressing and host or network identification.
    Ipv4_address.svg.png
    Ipv4_address.svg.png
  18. Router:It is part of a network´s switch. It determines the next network point to which information(packet) should be directed to.
  19. Switch:





Security terms:

  1. Firewall: a part of a computer system or network that is designed to block unauthorized access.
  2. Encryption: any procedure used to convert text into ciphertext (encrypted message) to prevent anyone but the intended person from reading that data.
  3. SSL: (Secure Socket Layer) Protocols which are made to provide security for communication over the networks
  4. Login : Process to enter to a webpage using your password and username
  5. Password: a secret word-code to serve as a security measure against unauthorized access.
  6. Username: a name or nickname that someone uses for identification purposes when logging onto a computer,e-mail address or certain webpages.
  7. Access: To be able to enter to a place you want to enter.
  8. Access permissions: features that control access to shared resources
  9. Sysadmin: system administrator
  10. Physhing
  11. Pharming
  12. Brute Force Attack
  13. Rainbow Tables Attack:


E-Commerce terms:

  1. E-commerce:
  2. B2B:
  3. B2C:
  4. C2C:
  5. PayPal: